SanDisk CloudSpeed Ultra 800GB 2.5" SATAIII Internal Solid State Drive SDLFOCAM-800G-1HA1 Email and messaging have become essential pieces of official records for businesses and organizations. Financial services applications primarily involve transactional services, data analytics, and market simulations. E-Commerce applications provide faster, more efficient interchanges of data between groups, such as business to business (B to B), and business to consumer (B to C).